All on-line orders will be shipped when credit card verifications are received. Please make all claims for damage or shortage promptly upon receipt of shipment. This will enable us to correct the situation in a minimum amount of time. Please do not return merchandise without our permission. All sales of books are final unless damaged in the shipping process.All prices are subject to change without notice. Orders outside the US are calculated on a per order basis depending on quantity of books and country shipped to.